Milk bottle cap



Oct. 29, 1935. w. DUFFY 2,019,402

MILK BOTTLE CAP Filed July 16, 1935 Patented Oct. 29, 1935 UNITED STATES PATENT OFFICE 3 Claims.

This invention relates to closures for receptacles and more particularly to a closure for a bottle of the type used for milk, cream, or the like.

An object of this invention is to provide a combination neck and closure for the neck whereby the contents of the bottle may be viewed from the top of the bottle and whereby the rim of the bottle is covered by the closure.

Another object of this invention is to provide a transparent closure which is adapted to engage threads mounted on the rim of the bottle, the threads being disposed on the inside and the outside of the rim so as to provide a seal against leakage of the contents of the bottle and to provide the seal whereby liquids or the like cannot enter the bottle from the exterior thereof.

The above and various other objects and advantages of this invention will in part be described in, and in part be understood from the following detail description of the present preferred embodiment, the same being illustrated in the accompanying drawing wherein:

Figure 1 is a detail side elevation of a closure mounted on a bottle which is shown in fragmentary side elevation.

Figure 2 is an enlarged sectional view taken on the line 2--2 of Figure 1.

Figure 3 is a fragmentary side elevation of the bottle with the cap or closure removed.

Figure 4 is a bottom plan view of the closure.

Referring to the drawing wherein like numerals of reference designate corresponding parts throughout the several views, the numeral l designates generally the neck of a bottle which, in the present instance, is a bottle of the type conventionally used for dispensing milk, cream, or like dairy products. This bottle H] has a rim l3, and a seat I l on the inside of the rim 13.

A cap, generally designated as I2, is adapted to removably engage the rim I3 of the bottle neck I!) and this cap l2 has a dependent annular flange I4 which is adapted to engage over the exterior of the rim l3. Preferably, the cap 12 is constructed of transparent material, such as glass or the like, and the rim I3 is provided with threads l5 for engagement with complementary threads l6 carried by the inside of the annular flange I4. The thread I5 is of such a character that the cap [2 may be turned to tightened condition by substantially one complete turn of the cap.

The cap 12 is also provided with a dependent plate or disc member H, the marginal portions of which are disposed spaced inwardly from the threads l5 of the flange l4 so as to provide an annular groove on the inside of the cap to receive the rim it of the cap.

This disc or body member I1 is provided with threads I8 engageable with interior threads l9 carried by the rim l3. The threads l8-I9 are of substantially the same pitch as the threads I5'l 6 so that the two threads carried by the rim l3 and the cap l2 will tighten or hold the cap 12 on the top of the neck It. If desired, a gasket 20 may be disposed on the seat H so that an additional sealing means may be provided to prevent leakage of the liquid in the bottle. 10

In the use of this device, the cap 12 is preferably constructed of glass or like material and, if desired, the gasket may be dispensed with as the threads I8l9 are so constructed as to prevent leakage of the contents of the bottle.

After the bottle has been filled with the desired liquid, the cap l2 may be tightened and the bottle then dispensed in the usual manner. The purchaser of the contents of the bottle may readily remove the cap by unscrewing the same 20 and, if desired, the peripheral surface of the annular flange 14 may be provided with suitable serrations, or the like, to prevent slippage during the unscrewing of the cap.

Through the use of a combined bottle and cap I of this character, the empty bottle will not become dirty while it is awaiting collection and the interior of the bottle can, therefore, be more readily cleansed by the seller so that a bottle having a cap constructed according to this invention will be more hygienic than bottles using the removable caps or discs.

I claim:

1. In combination, a bottle, a rim on the neck of the bottle, exterior threads carried by the rim, interior threads carried by the rim, a cap having an annular groove to receive the rim, and threads carried by the cap on opposite sides of the groove to threadably mount the cap on the rim of the bottle.

2. A cap for a receptacle comprising an annular body having an annular groove on one side thereof and threads carried by the body on opposite sides of the groove.

3. In combination, a bottle, a rim on the top of the bottle, a seat on the inner side of the rim below the top thereof, a cap including a body having an annular groove therein to loosely receive the rim of the bottle, exterior threads carried by the rim of the bottle, interior threads carried by the rim of the bottle above the seat, and threads carried by the cap on opposite sides of the groove to threadably engage the interior and exterior threads of the rim.

WALTER B. DUFFY. 

